I was wondering - if I want to put AO or roughness in alpha of a base color texure will alpha be sRGB or not? I have heard that Unreal remaps alpha as linear automatically. Is it true?
Yes, you can. In fact, this is the recommended setup by Epic for mobile games to only need 2 textures for an asset: 1 - Base colour in RGB channel - Roughness in Alpha channel(metalness is a scalar node) 2 - Normal map
Alpha channel is recognised as linear data and auto-interpolated so you would leave sRGB enabled.
Replies
1 - Base colour in RGB channel - Roughness in Alpha channel(metalness is a scalar node)
2 - Normal map
Alpha channel is recognised as linear data and auto-interpolated so you would leave sRGB enabled.